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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <glib.h> | |
21 | #include "libsigrok.h" | |
22 | #include "libsigrok-internal.h" | |
23 | #include "agilent-dmm.h" | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | #include <errno.h> | |
27 | #include <math.h> | |
28 | ||
29 | static void dispatch(const struct sr_dev_inst *sdi) | |
30 | { | |
31 | struct dev_context *devc; | |
32 | const struct agdmm_job *jobs; | |
33 | int64_t now; | |
34 | int i; | |
35 | ||
36 | devc = sdi->priv; | |
37 | jobs = devc->profile->jobs; | |
38 | now = g_get_monotonic_time() / 1000; | |
39 | for (i = 0; (&jobs[i])->interval; i++) { | |
40 | if (now - devc->jobqueue[i] > (&jobs[i])->interval) { | |
41 | sr_spew("Running job %d.", i); | |
42 | (&jobs[i])->send(sdi); | |
43 | devc->jobqueue[i] = now; | |
44 | } | |
45 | } | |
46 | } | |
47 | ||
48 | static void receive_line(const struct sr_dev_inst *sdi) | |
49 | { | |
50 | struct dev_context *devc; | |
51 | const struct agdmm_recv *recvs, *recv; | |
52 | GRegex *reg; | |
53 | GMatchInfo *match; | |
54 | int i; | |
55 | ||
56 | devc = sdi->priv; | |
57 | ||
58 | /* Strip CRLF */ | |
59 | while (devc->buflen) { | |
60 | if (*(devc->buf + devc->buflen - 1) == '\r' | |
61 | || *(devc->buf + devc->buflen - 1) == '\n') | |
62 | *(devc->buf + --devc->buflen) = '\0'; | |
63 | else | |
64 | break; | |
65 | } | |
66 | sr_spew("Received '%s'.", devc->buf); | |
67 | ||
68 | recv = NULL; | |
69 | recvs = devc->profile->recvs; | |
70 | for (i = 0; (&recvs[i])->recv_regex; i++) { | |
71 | reg = g_regex_new((&recvs[i])->recv_regex, 0, 0, NULL); | |
72 | if (g_regex_match(reg, (char *)devc->buf, 0, &match)) { | |
73 | recv = &recvs[i]; | |
74 | break; | |
75 | } | |
76 | g_match_info_unref(match); | |
77 | g_regex_unref(reg); | |
78 | } | |
79 | if (recv) { | |
80 | recv->recv(sdi, match); | |
81 | g_match_info_unref(match); | |
82 | g_regex_unref(reg); | |
83 | } else | |
84 | sr_dbg("Unknown line '%s'.", devc->buf); | |
85 | ||
86 | /* Done with this. */ | |
87 | devc->buflen = 0; | |
88 | } | |
89 | ||
90 | SR_PRIV int agdmm_receive_data(int fd, int revents, void *cb_data) | |
91 | { | |
92 | struct sr_dev_inst *sdi; | |
93 | struct dev_context *devc; | |
94 | struct sr_serial_dev_inst *serial; | |
95 | int len; | |
96 | ||
97 | (void)fd; | |
98 | ||
99 | if (!(sdi = cb_data)) | |
100 | return TRUE; | |
101 | ||
102 | if (!(devc = sdi->priv)) | |
103 | return TRUE; | |
104 | ||
105 | serial = sdi->conn; | |
106 | if (revents == G_IO_IN) { | |
107 | /* Serial data arrived. */ | |
108 | while(AGDMM_BUFSIZE - devc->buflen - 1 > 0) { | |
109 | len = serial_read(serial, devc->buf + devc->buflen, 1); | |
110 | if (len < 1) | |
111 | break; | |
112 | devc->buflen += len; | |
113 | *(devc->buf + devc->buflen) = '\0'; | |
114 | if (*(devc->buf + devc->buflen - 1) == '\n') { | |
115 | /* End of line */ | |
116 | receive_line(sdi); | |
117 | break; | |
118 | } | |
119 | } | |
120 | } | |
121 | ||
122 | dispatch(sdi); | |
123 | ||
124 | if (devc->limit_samples && devc->num_samples >= devc->limit_samples) | |
125 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
126 | ||
127 | return TRUE; | |
128 | } | |
129 | ||
130 | static int agdmm_send(const struct sr_dev_inst *sdi, const char *cmd) | |
131 | { | |
132 | struct sr_serial_dev_inst *serial; | |
133 | char buf[32]; | |
134 | ||
135 | serial = sdi->conn; | |
136 | ||
137 | sr_spew("Sending '%s'.", cmd); | |
138 | strncpy(buf, cmd, 28); | |
139 | if (!strncmp(buf, "*IDN?", 5)) | |
140 | strncat(buf, "\r\n", 32); | |
141 | else | |
142 | strncat(buf, "\n\r\n", 32); | |
143 | if (serial_write(serial, buf, strlen(buf)) == -1) { | |
144 | sr_err("Failed to send: %s.", strerror(errno)); | |
145 | return SR_ERR; | |
146 | } | |
147 | ||
148 | return SR_OK; | |
149 | } | |
150 | ||
151 | static int send_stat(const struct sr_dev_inst *sdi) | |
152 | { | |
153 | return agdmm_send(sdi, "STAT?"); | |
154 | } | |
155 | ||
156 | static int recv_stat_u123x(const struct sr_dev_inst *sdi, GMatchInfo *match) | |
157 | { | |
158 | struct dev_context *devc; | |
159 | char *s; | |
160 | ||
161 | devc = sdi->priv; | |
162 | s = g_match_info_fetch(match, 1); | |
163 | sr_spew("STAT response '%s'.", s); | |
164 | ||
165 | /* Max, Min or Avg mode -- no way to tell which, so we'll | |
166 | * set both flags to denote it's not a normal measurement. */ | |
167 | if (s[0] == '1') | |
168 | devc->cur_mqflags |= SR_MQFLAG_MAX | SR_MQFLAG_MIN; | |
169 | else | |
170 | devc->cur_mqflags &= ~(SR_MQFLAG_MAX | SR_MQFLAG_MIN); | |
171 | ||
172 | if (s[1] == '1') | |
173 | devc->cur_mqflags |= SR_MQFLAG_RELATIVE; | |
174 | else | |
175 | devc->cur_mqflags &= ~SR_MQFLAG_RELATIVE; | |
176 | ||
177 | /* Triggered or auto hold modes. */ | |
178 | if (s[2] == '1' || s[3] == '1') | |
179 | devc->cur_mqflags |= SR_MQFLAG_HOLD; | |
180 | else | |
181 | devc->cur_mqflags &= ~SR_MQFLAG_HOLD; | |
182 | ||
183 | /* Temp/aux mode. */ | |
184 | if (s[7] == '1') | |
185 | devc->mode_tempaux = TRUE; | |
186 | else | |
187 | devc->mode_tempaux = FALSE; | |
188 | ||
189 | /* Continuity mode. */ | |
190 | if (s[16] == '1') | |
191 | devc->mode_continuity = TRUE; | |
192 | else | |
193 | devc->mode_continuity = FALSE; | |
194 | ||
195 | g_free(s); | |
196 | ||
197 | return SR_OK; | |
198 | } | |
199 | ||
200 | static int recv_stat_u125x(const struct sr_dev_inst *sdi, GMatchInfo *match) | |
201 | { | |
202 | struct dev_context *devc; | |
203 | char *s; | |
204 | ||
205 | devc = sdi->priv; | |
206 | s = g_match_info_fetch(match, 1); | |
207 | sr_spew("STAT response '%s'.", s); | |
208 | ||
209 | /* Peak hold mode. */ | |
210 | if (s[4] == '1') | |
211 | devc->cur_mqflags |= SR_MQFLAG_MAX; | |
212 | else | |
213 | devc->cur_mqflags &= ~SR_MQFLAG_MAX; | |
214 | ||
215 | /* Triggered hold mode. */ | |
216 | if (s[7] == '1') | |
217 | devc->cur_mqflags |= SR_MQFLAG_HOLD; | |
218 | else | |
219 | devc->cur_mqflags &= ~SR_MQFLAG_HOLD; | |
220 | ||
221 | g_free(s); | |
222 | ||
223 | return SR_OK; | |
224 | } | |
225 | ||
226 | static int send_fetc(const struct sr_dev_inst *sdi) | |
227 | { | |
228 | return agdmm_send(sdi, "FETC?"); | |
229 | } | |
230 | ||
231 | static int recv_fetc(const struct sr_dev_inst *sdi, GMatchInfo *match) | |
232 | { | |
233 | struct dev_context *devc; | |
234 | struct sr_datafeed_packet packet; | |
235 | struct sr_datafeed_analog analog; | |
236 | float fvalue; | |
237 | char *mstr, *eptr; | |
238 | ||
239 | sr_spew("FETC reply '%s'.", g_match_info_get_string(match)); | |
240 | devc = sdi->priv; | |
241 | ||
242 | if (devc->cur_mq == -1) | |
243 | /* Haven't seen configuration yet, so can't know what | |
244 | * the fetched float means. Not really an error, we'll | |
245 | * get metadata soon enough. */ | |
246 | return SR_OK; | |
247 | ||
248 | if (!strcmp(g_match_info_get_string(match), "+9.90000000E+37")) { | |
249 | /* An invalid measurement shows up on the display as "O.L", but | |
250 | * comes through like this. Since comparing 38-digit floats | |
251 | * is rather problematic, we'll cut through this here. */ | |
252 | fvalue = NAN; | |
253 | } else { | |
254 | mstr = g_match_info_fetch(match, 1); | |
255 | fvalue = strtof(mstr, &eptr); | |
256 | g_free(mstr); | |
257 | if (fvalue == 0.0 && eptr == mstr) { | |
258 | sr_err("Invalid float."); | |
259 | return SR_ERR; | |
260 | } | |
261 | if (devc->cur_divider > 0) | |
262 | fvalue /= devc->cur_divider; | |
263 | } | |
264 | ||
265 | memset(&analog, 0, sizeof(struct sr_datafeed_analog)); | |
266 | analog.mq = devc->cur_mq; | |
267 | analog.unit = devc->cur_unit; | |
268 | analog.mqflags = devc->cur_mqflags; | |
269 | analog.probes = sdi->probes; | |
270 | analog.num_samples = 1; | |
271 | analog.data = &fvalue; | |
272 | packet.type = SR_DF_ANALOG; | |
273 | packet.payload = &analog; | |
274 | sr_session_send(devc->cb_data, &packet); | |
275 | ||
276 | devc->num_samples++; | |
277 | ||
278 | return SR_OK; | |
279 | } | |
280 | ||
281 | static int send_conf(const struct sr_dev_inst *sdi) | |
282 | { | |
283 | return agdmm_send(sdi, "CONF?"); | |
284 | } | |
285 | ||
286 | static int recv_conf_u123x(const struct sr_dev_inst *sdi, GMatchInfo *match) | |
287 | { | |
288 | struct dev_context *devc; | |
289 | char *mstr; | |
290 | ||
291 | sr_spew("CONF? response '%s'.", g_match_info_get_string(match)); | |
292 | devc = sdi->priv; | |
293 | mstr = g_match_info_fetch(match, 1); | |
294 | if (!strcmp(mstr, "V")) { | |
295 | devc->cur_mq = SR_MQ_VOLTAGE; | |
296 | devc->cur_unit = SR_UNIT_VOLT; | |
297 | devc->cur_mqflags = 0; | |
298 | devc->cur_divider = 0; | |
299 | } else if(!strcmp(mstr, "MV")) { | |
300 | if (devc->mode_tempaux) { | |
301 | devc->cur_mq = SR_MQ_TEMPERATURE; | |
302 | /* No way to detect whether Fahrenheit or Celcius | |
303 | * is used, so we'll just default to Celcius. */ | |
304 | devc->cur_unit = SR_UNIT_CELSIUS; | |
305 | devc->cur_mqflags = 0; | |
306 | devc->cur_divider = 0; | |
307 | } else { | |
308 | devc->cur_mq = SR_MQ_VOLTAGE; | |
309 | devc->cur_unit = SR_UNIT_VOLT; | |
310 | devc->cur_mqflags = 0; | |
311 | devc->cur_divider = 1000; | |
312 | } | |
313 | } else if(!strcmp(mstr, "A")) { | |
314 | devc->cur_mq = SR_MQ_CURRENT; | |
315 | devc->cur_unit = SR_UNIT_AMPERE; | |
316 | devc->cur_mqflags = 0; | |
317 | devc->cur_divider = 0; | |
318 | } else if(!strcmp(mstr, "UA")) { | |
319 | devc->cur_mq = SR_MQ_CURRENT; | |
320 | devc->cur_unit = SR_UNIT_AMPERE; | |
321 | devc->cur_mqflags = 0; | |
322 | devc->cur_divider = 1000000; | |
323 | } else if(!strcmp(mstr, "FREQ")) { | |
324 | devc->cur_mq = SR_MQ_FREQUENCY; | |
325 | devc->cur_unit = SR_UNIT_HERTZ; | |
326 | devc->cur_mqflags = 0; | |
327 | devc->cur_divider = 0; | |
328 | } else if(!strcmp(mstr, "RES")) { | |
329 | if (devc->mode_continuity) { | |
330 | devc->cur_mq = SR_MQ_CONTINUITY; | |
331 | devc->cur_unit = SR_UNIT_BOOLEAN; | |
332 | } else { | |
333 | devc->cur_mq = SR_MQ_RESISTANCE; | |
334 | devc->cur_unit = SR_UNIT_OHM; | |
335 | } | |
336 | devc->cur_mqflags = 0; | |
337 | devc->cur_divider = 0; | |
338 | } else if(!strcmp(mstr, "CAP")) { | |
339 | devc->cur_mq = SR_MQ_CAPACITANCE; | |
340 | devc->cur_unit = SR_UNIT_FARAD; | |
341 | devc->cur_mqflags = 0; | |
342 | devc->cur_divider = 0; | |
343 | } else | |
344 | sr_dbg("Unknown first argument."); | |
345 | g_free(mstr); | |
346 | ||
347 | if (g_match_info_get_match_count(match) == 4) { | |
348 | mstr = g_match_info_fetch(match, 3); | |
349 | /* Third value, if present, is always AC or DC. */ | |
350 | if (!strcmp(mstr, "AC")) | |
351 | devc->cur_mqflags |= SR_MQFLAG_AC; | |
352 | else if (!strcmp(mstr, "DC")) | |
353 | devc->cur_mqflags |= SR_MQFLAG_DC; | |
354 | else | |
355 | sr_dbg("Unknown third argument."); | |
356 | g_free(mstr); | |
357 | } else | |
358 | devc->cur_mqflags &= ~(SR_MQFLAG_AC | SR_MQFLAG_DC); | |
359 | ||
360 | return SR_OK; | |
361 | } | |
362 | ||
363 | static int recv_conf_u125x(const struct sr_dev_inst *sdi, GMatchInfo *match) | |
364 | { | |
365 | struct dev_context *devc; | |
366 | char *mstr; | |
367 | ||
368 | sr_spew("CONF? response '%s'.", g_match_info_get_string(match)); | |
369 | devc = sdi->priv; | |
370 | mstr = g_match_info_fetch(match, 1); | |
371 | if (!strncmp(mstr, "VOLT", 4)) { | |
372 | devc->cur_mq = SR_MQ_VOLTAGE; | |
373 | devc->cur_unit = SR_UNIT_VOLT; | |
374 | devc->cur_mqflags = 0; | |
375 | devc->cur_divider = 0; | |
376 | if (mstr[4] == ':') { | |
377 | if (!strcmp(mstr + 4, "AC")) | |
378 | devc->cur_mqflags |= SR_MQFLAG_AC; | |
379 | else if (!strcmp(mstr + 4, "DC")) | |
380 | devc->cur_mqflags |= SR_MQFLAG_DC; | |
381 | else | |
382 | /* "ACDC" appears as well, no idea what it means. */ | |
383 | devc->cur_mqflags &= ~(SR_MQFLAG_AC | SR_MQFLAG_DC); | |
384 | } else | |
385 | devc->cur_mqflags &= ~(SR_MQFLAG_AC | SR_MQFLAG_DC); | |
386 | } else if(!strcmp(mstr, "CURR")) { | |
387 | devc->cur_mq = SR_MQ_CURRENT; | |
388 | devc->cur_unit = SR_UNIT_AMPERE; | |
389 | devc->cur_mqflags = 0; | |
390 | devc->cur_divider = 0; | |
391 | } else if(!strcmp(mstr, "RES")) { | |
392 | if (devc->mode_continuity) { | |
393 | devc->cur_mq = SR_MQ_CONTINUITY; | |
394 | devc->cur_unit = SR_UNIT_BOOLEAN; | |
395 | } else { | |
396 | devc->cur_mq = SR_MQ_RESISTANCE; | |
397 | devc->cur_unit = SR_UNIT_OHM; | |
398 | } | |
399 | devc->cur_mqflags = 0; | |
400 | devc->cur_divider = 0; | |
401 | } else | |
402 | sr_dbg("Unknown first argument."); | |
403 | g_free(mstr); | |
404 | ||
405 | return SR_OK; | |
406 | } | |
407 | ||
408 | /* At least the 123x and 125x appear to have this. */ | |
409 | static int recv_conf(const struct sr_dev_inst *sdi, GMatchInfo *match) | |
410 | { | |
411 | struct dev_context *devc; | |
412 | char *mstr; | |
413 | ||
414 | sr_spew("CONF? response '%s'.", g_match_info_get_string(match)); | |
415 | devc = sdi->priv; | |
416 | mstr = g_match_info_fetch(match, 1); | |
417 | if(!strcmp(mstr, "DIOD")) { | |
418 | devc->cur_mq = SR_MQ_VOLTAGE; | |
419 | devc->cur_unit = SR_UNIT_VOLT; | |
420 | devc->cur_mqflags = SR_MQFLAG_DIODE; | |
421 | devc->cur_divider = 0; | |
422 | } else | |
423 | sr_dbg("Unknown single argument."); | |
424 | g_free(mstr); | |
425 | ||
426 | return SR_OK; | |
427 | } | |
428 | ||
429 | /* This comes in whenever the rotary switch is changed to a new position. | |
430 | * We could use it to determine the major measurement mode, but we already | |
431 | * have the output of CONF? for that, which is more detailed. However | |
432 | * we do need to catch this here, or it'll show up in some other output. */ | |
433 | static int recv_switch(const struct sr_dev_inst *sdi, GMatchInfo *match) | |
434 | { | |
435 | (void)sdi; | |
436 | ||
437 | sr_spew("Switch '%s'.", g_match_info_get_string(match)); | |
438 | ||
439 | return SR_OK; | |
440 | } | |
441 | ||
442 | SR_PRIV const struct agdmm_job agdmm_jobs_u123x[] = { | |
443 | { 143, send_stat }, | |
444 | { 1000, send_conf }, | |
445 | { 143, send_fetc }, | |
446 | { 0, NULL } | |
447 | }; | |
448 | ||
449 | SR_PRIV const struct agdmm_recv agdmm_recvs_u123x[] = { | |
450 | { "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u123x }, | |
451 | { "^\\*([0-9])$", recv_switch }, | |
452 | { "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc }, | |
453 | { "^\"(V|MV|A|UA|FREQ),(\\d),(AC|DC)\"$", recv_conf_u123x }, | |
454 | { "^\"(RES|CAP),(\\d)\"$", recv_conf_u123x}, | |
455 | { "^\"(DIOD)\"$", recv_conf }, | |
456 | { NULL, NULL } | |
457 | }; | |
458 | ||
459 | SR_PRIV const struct agdmm_job agdmm_jobs_u125x[] = { | |
460 | { 143, send_stat }, | |
461 | { 1000, send_conf }, | |
462 | { 143, send_fetc }, | |
463 | { 0, NULL } | |
464 | }; | |
465 | ||
466 | SR_PRIV const struct agdmm_recv agdmm_recvs_u125x[] = { | |
467 | { "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u125x }, | |
468 | { "^\\*([0-9])$", recv_switch }, | |
469 | { "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc }, | |
470 | { "^(VOLT|CURR|RES|CAP) ([-+][0-9\\.E\\-+]+),([-+][0-9\\.E\\-+]+)$", recv_conf_u125x }, | |
471 | { "^(VOLT:[ACD]+) ([-+][0-9\\.E\\-+]+),([-+][0-9\\.E\\-+]+)$", recv_conf_u125x }, | |
472 | { "^\"(DIOD)\"$", recv_conf }, | |
473 | { NULL, NULL } | |
474 | }; |